Chinese Physics C > 2008, Vol. 32 > Issue(S2): 53-55

β-delayed fission of²²⁸Ac

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Abstract：
The basic process of an exotic decay mode namely β-delayed fission is simply introduced. The progress status of the study in the world is essentialized. The observation of β-delayed fission of²²⁸Ac is reported. The radium was radiochemically separated from natural thorium. Thin Ra sources in which²²⁸Ac was got through²²⁸Ra →β^－228Ac were prepared for observing fission fragments from β-delayed fission of²²⁸Ac. They exposed to the mica fission track detectors, and measured by an HPGe γ-ray detector. The β-delayed fission events of²²⁸Ac were observed and its β-delayed fission probability was found to be (5±2)×10^－12.

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YUAN Shuang-Gui, XU Yan-Bing, DING Hua-Jie, YANG Wei-Fan, NIU Yan-Ning and XIAO Yong-Hou. β-delayed fission of ²²⁸Ac[J]. Chinese Physics C, 2008, 32(S2): 53-55.

YUAN Shuang-Gui, XU Yan-Bing, DING Hua-Jie, YANG Wei-Fan, NIU Yan-Ning and XIAO Yong-Hou. β-delayed fission of ²²⁸Ac[J]. Chinese Physics C, 2008, 32(S2): 53-55. shu

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Received: 2008-07-16
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

β-delayed fission of²²⁸Ac

Corresponding author:YUAN Shuang-Gui,

Received Date:2008-07-16

Accepted Date:1900-01-01

Available Online:2008-01-03

Abstract:The basic process of an exotic decay mode namely β-delayed fission is simply introduced. The progress status of the study in the world is essentialized. The observation of β-delayed fission of²²⁸Ac is reported. The radium was radiochemically separated from natural thorium. Thin Ra sources in which²²⁸Ac was got through²²⁸Ra →β^－228Ac were prepared for observing fission fragments from β-delayed fission of²²⁸Ac. They exposed to the mica fission track detectors, and measured by an HPGe γ-ray detector. The β-delayed fission events of²²⁸Ac were observed and its β-delayed fission probability was found to be (5±2)×10^－12.

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β-delayed fission of²²⁸Ac

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